Is this a correct translation of "This generation has the potential to make the foundation of what could possibly be the future of human existence in the cosmos"?
"Cette génération a le potentiel à faire la fondation duquel peut possiblement être le futur de l'existence des humains dans le cosmos"
I really just wanted to make sure of my use of “duquel”, but I think I should've just used “quel”.
Ce qui, donne, concaténé:
Cette génération a le potentiel de poser les fondations de ce que pourrait être le futur de l'existence humaine dans le cosmos.
C'est un peu lourd, en inversant le verbe de la seconde partie:
Cette génération a le potentiel de poser les fondations de ce que le futur de l'existence humaine dans le cosmos pourrait être.
"had" is a preterit, which is a past tense.
In French you say "avoir le potentiel de faire quelque chose"
"faire" is very vague in French, you should avoid using it as a translation from "make". "faire" is closer to "do". Here, use "fabriquer" for example.
"duquel" doesn't mean that. Here some examples of the correct usage: http://www.wordreference.com/fren/duquel. "Quel" is not correct either. "De ce qui/de ce que" is definitely what you need here.
"could" is a conditional, translate it by "pourrait".
I wonder if even the English phrase is correct here by using "possible". I think they mean "possibly" in which case your translation ("possiblement") is good.
"l'existence" is feminine in French, so it is "de l'existence".
"le cosmos" is singular.
